<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--准备好一个“容器”-->
<div id="test"></div>

<!--引入react核心库-->
<script type="text/javascript" src="../js/react.development.js"></script>
<!--引入react-dom，用于支持react操作DOM -->
<script type="text/javascript" src="../js/react-dom.development.js"></script>
<!--引入babel，用于将jsx转为js -->
<script type="text/javascript" src="../js/babel.min.js"></script>

<script type="text/javascript" src="../js/prop-types.js"></script>

<script type="text/babel">
    //创建组件
    class Demo extends React.Component {
        showData = () => {
            const {input1} = this
            alert(input1.value)
        }
        showData2 = () => {
            const {input2} = this
            alert(input2.value)
        }

        render() {
            return (
                <div>
                    <input ref={(currentNode) => {this.input1 = currentNode}} type="text" placeholder="点击按钮提示数据"></input>
                    <button onClick={this.showData}>点我提示左侧的数据</button>
                    <input ref={(currentNode) => {this.input2 = currentNode}} onBlur={this.showData2} type="text" placeholder="失去焦点提示数据"></input>
                </div>
            )
        }
    }

    //2.渲染组件到页面
    ReactDOM.render(<Demo a="1" b="2"></Demo>, document.getElementById('test'))
</script>
</body>
</html>

